Mechanical refrigeration



c. c: SPREEN MECHANICAL REFRIGERATION -Fi1ed July 27. 1926 [7 v h arias C. Spre en [raven for Patented Apr; 30, 19 29.

- UNITED STATES A N 'orFicE.

cHA LEs MECHANICAL REFRIGERATION. H E

Application filed ul 27,

My invention relates to mechanical refrigeration, and particularly to' sectional expansion units for mechanical refrigerating appaplicable to this use. In the drawings accompanying this specification and forming a part of this application I have. shown, for purposesof illustratiomone form which my invention mayassume. these drawings:

Figure 1 is a side elevation of this illustrative formof my invention, I

Figure 2 isa section on the line 2-2 of Figure 1, while 1 Figure 3 is a section on the line 3-3 of Figure 2. 5 Q

' The embodiment of my invention herein shown and described comprises an intermediate section 11 flanked by two end sections 12, and'each of these sections comprises; an upper connecting portion 13 arranged to receive at either end either a nipple 14 connecting that upperconnecting portion 13 with the upper connecting portion 13 of an adjacent section, or a plug 15 closing that end of that upper connecting portion 13, a lower connecting portion 16 arranged to receive at either end either a nipple 17 connecting that lower connecting portion 16 with the lower connecting portion 16 of an adjacent section, or a. plug 18 closing that end of that lower connecting portion 16, and a central heat transferring portion 19 extending between and in communication with the upper and lower connecting portions 13 and 16 of that section and provided on either face with a plurality of fins 20 serving to increase the transfer of heat into or from the heat transferring portion 19 and, in cooperation with the fins 20 of an adjacent section, to provide suitable supports for receptacles 21 for the formation of artificial ice.

Integral with the upper connecting portion 13 of the intermediate section 11, and in cemniunication therewith, is a, chamber 22 arranged t receive control val ve means for regulating t ie-fiow of liquid refirigerant into the exrgansipn unit, this chamber 22 chmprisi'ng a h nizbntal cylindricalibo y 23 integral with the upgperibonnecting, portr n 13 of the inter- Inetlia eisecti'onlh-clbsed at one end by an'iintegi gil end wall 24, and closed at the other end t ned W n id e e en,

c. SR EEN, or DETROIT, MICHIGAN, 'AssIenoR T0 KEnvINAroR coRroRA- .TION, or DETROIT, MICHIGAN,

A CORPORATION OF MICHIGAN.

1926. Serial in. 125,186.

'by an end plate 25 secured in position any suitable manner, supporting on its, exterior the outlet shut-off; valve 26 and the inlet shut- I off valve 27, and supporting on its interior a block 28 containing an inlet duct (not shown) communicating with the inlet valve 27 and arranged to beclosed by means of a valve 29 operated by a float 30 pivoted at 31 to a strut 32 extending outwardly from the block 28.

I From the-abovc description it will be ap- I parent to those skilled in the art that I have provided a new and improved sectional expansion unit, particularly adapted. for use witlrrefr'igerating apparatus ofthe compressor-condenser-floodedwxpander type. vAt the same time, it will also be-obvious to those skilled in theart that the particular embodi- ,ment of my inventionherein shown and de scribed may be variously changed andmodified without departing from the spirit of my invention or sacrificing the advantages there- I of, and it will accordinglybe understood that I the disclosure herein is illustrative only and that my invention is not limited thereto.

I claim:

1. In a mechanical refrigeratin appara: tus of the compressor-condenserooded-expander type, an expansionunit comprising a plurality of sections connected with their interiors in operative communication, a chamber for the reception of control valve means integral with one of said sections with its interior in operative communication with the interior of, said section, and control valve means operatively, positioned within said chamber.

2. In a mechanical refrigerating apparatus of the compressor-condenser-fiooded expander type, an expansion unit comprising a pair of end refrigerating sections and an 'in teriors inoperative communication, a chamteriorsin operative communication, a chamher for the reception of control'valve means above and integral with'sa'id intermediate section with its interior in operative communication with the interior of said intermediate sec- .tion, and control valve 1 a mechanieal retffirigeratin iap paratns ofvthe comphesso QDd$1isixfido ee-ahead,

terior 1n operative con municamon with the means operativply pointeriors of other sections and comprisihga -P ltent No. 1,711,552.

- chamber for the reception of control valve interiors of other Sections and comprising a 10 p means integral wit-h said section with its lntechamber .forthe receptlon of control'v-alve riorin operative communication with the inrmeans above and integral with said section terior of said sectlon. Wlth its interior in operative commun cation 4.1 In a mechanical refrigeratingapparatus with the interior of said section.

of the compressor-condenser-fioo(led-expander type, a sectional expansion unit comprising signature. 8. section arranged to be connected with its interior in operative communication 'with the In testimony whereof Ihereunto afiixj-my 15 HARLES c. SPREEN.

CERTIFICATE or connection Granted April 30, 1929, to

' CHARLES c, SBREEN. i A

. I Itis hereby certified that error appears in the printed'specification oi. the above nnmbered patent requiring correction as follows: Page 1, line 94, claim 2,' af ter the-word "an" insert the words-intermediate section all connectedwith their'.'; same claim, strike outline 96; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the casein theJP-atent Office. v

I Signedimd sealed this 4th day of June, A. D. 1929.

- (Seal) Acting Commissioner of Patents.

CERTIFICATE OF CORRECTION.

Patent No. 1,711,252. Granted April 30, 1929, to

CHARLES c. SPREEN.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 1, line 94, claim 2, after the word "an" insert the words "intermediate section all connected with their"; same claim, strike out line 96; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 4th day of June, A. D. 1929.

M. J. Moore, (Seal) Acting Commissioner of Patents. 

